Abstract
In the development of soil deodorization equipment, it is necessary to measure the air permeability coefficient that describes fluid flow in soil. The air permeability coefficient is an important parameter in gas advection in soil. We proposed a new test apparatus to measure air permeability accurately. In this study, three sandy soils (Toyoura sand, Silica sand, Masa soil) were used to measure air permeability. The proposed apparatus has the following advantages compared to those proposed by others before. 1) It can stop side flow by applying confined compression to a rubber cover from the side. 2) A change in the sample volume can be measured simultaneously. Although the results with Toyoura sand show that air permeability obtained using the proposed apparatus was slightly lower over the range of the suction than that measured by Kamiya et al. (2006), the proposed apparatus can be used not only for designing effective soil deodorizing equipment but also for other purposes.
